I have spent the last hour reading through threads concerning jukebox or mega-changer CD players. I am in the market for a new megachanger and have been trying to read up on what is out there. A common thread (ha, ha) in many of the postings is that the Sony ES models are better than non-ES models. When I go to the Sony website, there aren't very many mega-changers listed and none of them are the ES models, just CX. What's the difference between a CX and an ES and have the ES models been discontinued? Does anyone know if the new CDP-CX455 is a replacement, comparable, or any good?